/* $OpenBSD: if_igc.c,v 1.10 2022/11/11 16:41:44 mbuhl Exp $ */ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2016 Nicole Graziano * All rights reserved. * Copyright (c) 2021 Rubicon Communications, LLC (Netgate) * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "bpfilter.h" #include "vlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if NBPFILTER > 0 #include #endif #include #include #include #include #include #include #include const struct pci_matchid igc_devices[] = { { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I220_V }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I221_V }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I225_BLANK_NVM }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I225_I }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I225_IT }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I225_K }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I225_K2 }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I225_LM }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I225_LMVP }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I225_V }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I226_BLANK_NVM }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I226_IT }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I226_LM }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I226_K }, { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_I226_V } }; /********************************************************************* * Function Prototypes *********************************************************************/ int igc_match(struct device *, void *, void *); void igc_attach(struct device *, struct device *, void *); int igc_detach(struct device *, int); void igc_identify_hardware(struct igc_softc *); int igc_allocate_pci_resources(struct igc_softc *); int igc_allocate_queues(struct igc_softc *); void igc_free_pci_resources(struct igc_softc *); void igc_reset(struct igc_softc *); void igc_init_dmac(struct igc_softc *, uint32_t); int igc_allocate_msix(struct igc_softc *); void igc_setup_msix(struct igc_softc *); int igc_dma_malloc(struct igc_softc *, bus_size_t, struct igc_dma_alloc *); void igc_dma_free(struct igc_softc *, struct igc_dma_alloc *); void igc_setup_interface(struct igc_softc *); void igc_init(void *); void igc_start(struct ifqueue *); int igc_txeof(struct tx_ring *); void igc_stop(struct igc_softc *); int igc_ioctl(struct ifnet *, u_long, caddr_t); int igc_rxrinfo(struct igc_softc *, struct if_rxrinfo *); int igc_rxfill(struct rx_ring *); void igc_rxrefill(void *); int igc_rxeof(struct rx_ring *); void igc_rx_checksum(uint32_t, struct mbuf *, uint32_t); void igc_watchdog(struct ifnet *); void igc_media_status(struct ifnet *, struct ifmediareq *); int igc_media_change(struct ifnet *); void igc_iff(struct igc_softc *); void igc_update_link_status(struct igc_softc *); int igc_get_buf(struct rx_ring *, int); int igc_tx_ctx_setup(struct tx_ring *, struct mbuf *, int, uint32_t *); void igc_configure_queues(struct igc_softc *); void igc_set_queues(struct igc_softc *, uint32_t, uint32_t, int); void igc_enable_queue(struct igc_softc *, uint32_t); void igc_enable_intr(struct igc_softc *); void igc_disable_intr(struct igc_softc *); int igc_intr_link(void *); int igc_intr_queue(void *); int igc_allocate_transmit_buffers(struct tx_ring *); int igc_setup_transmit_structures(struct igc_softc *); int igc_setup_transmit_ring(struct tx_ring *); void igc_initialize_transmit_unit(struct igc_softc *); void igc_free_transmit_structures(struct igc_softc *); void igc_free_transmit_buffers(struct tx_ring *); int igc_allocate_receive_buffers(struct rx_ring *); int igc_setup_receive_structures(struct igc_softc *); int igc_setup_receive_ring(struct rx_ring *); void igc_initialize_receive_unit(struct igc_softc *); void igc_free_receive_structures(struct igc_softc *); void igc_free_receive_buffers(struct rx_ring *); void igc_initialize_rss_mapping(struct igc_softc *); void igc_get_hw_control(struct igc_softc *); void igc_release_hw_control(struct igc_softc *); int igc_is_valid_ether_addr(uint8_t *); /********************************************************************* * OpenBSD Device Interface Entry Points *********************************************************************/ struct cfdriver igc_cd = { NULL, "igc", DV_IFNET }; const struct cfattach igc_ca = { sizeof(struct igc_softc), igc_match, igc_attach, igc_detach }; /********************************************************************* * Device identification routine * * igc_match determines if the driver should be loaded on * adapter based on PCI vendor/device id of the adapter. * * return 0 on success, positive on failure *********************************************************************/ int igc_match(struct device *parent, void *match, void *aux) { return pci_matchbyid((struct pci_attach_args *)aux, igc_devices, nitems(igc_devices)); } /********************************************************************* * Device initialization routine * * The attach entry point is called when the driver is being loaded. * This routine identifies the type of hardware, allocates all resources * and initializes the hardware. * * return 0 on success, positive on failure *********************************************************************/ void igc_attach(struct device *parent, struct device *self, void *aux) { struct pci_attach_args *pa = (struct pci_attach_args *)aux; struct igc_softc *sc = (struct igc_softc *)self; struct igc_hw *hw = &sc->hw; sc->osdep.os_sc = sc; sc->osdep.os_pa = *pa; /* Determine hardware and mac info */ igc_identify_hardware(sc); sc->num_tx_desc = IGC_DEFAULT_TXD; sc->num_rx_desc = IGC_DEFAULT_RXD; /* Setup PCI resources */ if (igc_allocate_pci_resources(sc)) goto err_pci; /* Allocate TX/RX queues */ if (igc_allocate_queues(sc)) goto err_pci; /* Do shared code initialization */ if (igc_setup_init_funcs(hw, true)) { printf(": Setup of shared code failed\n"); goto err_pci; } hw->mac.autoneg = DO_AUTO_NEG; hw->phy.autoneg_wait_to_complete = false; hw->phy.autoneg_advertised = AUTONEG_ADV_DEFAULT; /* Copper options. */ if (hw->phy.media_type == igc_media_type_copper) hw->phy.mdix = AUTO_ALL_MODES; /* Set the max frame size. */ sc->hw.mac.max_frame_size = 9234; /* Allocate multicast array memory. */ sc->mta = mallocarray(ETHER_ADDR_LEN, MAX_NUM_MULTICAST_ADDRESSES, M_DEVBUF, M_NOWAIT); if (sc->mta == NULL) { printf(": Can not allocate multicast setup array\n"); goto err_late; } /* Check SOL/IDER usage. */ if (igc_check_reset_block(hw)) printf(": PHY reset is blocked due to SOL/IDER session\n"); /* Enable Energy Efficient Ethernet. */ sc->hw.dev_spec._i225.eee_disable = true; igc_reset_hw(hw); /* Make sure we have a good EEPROM before we read from it. */ if (igc_validate_nvm_checksum(hw) < 0) { /* * Some PCI-E parts fail the first check due to * the link being in sleep state, call it again, * if it fails a second time its a real issue. */ if (igc_validate_nvm_checksum(hw) < 0) { printf(": The EEPROM checksum is not valid\n"); goto err_late; } } /* Copy the permanent MAC address out of the EEPROM. */ if (igc_read_mac_addr(hw) < 0) { printf(": EEPROM read error while reading MAC address\n"); goto err_late; } if (!igc_is_valid_ether_addr(hw->mac.addr)) { printf(": Invalid MAC address\n"); goto err_late; } memcpy(sc->sc_ac.ac_enaddr, sc->hw.mac.addr, ETHER_ADDR_LEN); if (igc_allocate_msix(sc)) goto err_late; /* Setup OS specific network interface. */ igc_setup_interface(sc); igc_reset(sc); hw->mac.get_link_status = true; igc_update_link_status(sc); /* The driver can now take control from firmware. */ igc_get_hw_control(sc); printf(", address %s\n", ether_sprintf(sc->hw.mac.addr)); return; err_late: igc_release_hw_control(sc); err_pci: igc_free_pci_resources(sc); free(sc->mta, M_DEVBUF, ETHER_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES); } /********************************************************************* * Device removal routine * * The detach entry point is called when the driver is being removed. * This routine stops the adapter and deallocates all the resources * that were allocated for driver operation. * * return 0 on success, positive on failure *********************************************************************/ int igc_detach(struct device *self, int flags) { struct igc_softc *sc = (struct igc_softc *)self; struct ifnet *ifp = &sc->sc_ac.ac_if; igc_stop(sc); igc_phy_hw_reset(&sc->hw); igc_release_hw_control(sc); ether_ifdetach(ifp); if_detach(ifp); igc_free_pci_resources(sc); igc_free_transmit_structures(sc); igc_free_receive_structures(sc); free(sc->mta, M_DEVBUF, ETHER_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES); return 0; } void igc_identify_hardware(struct igc_softc *sc) { struct igc_osdep *os = &sc->osdep; struct pci_attach_args *pa = &os->os_pa; /* Save off the information about this board. */ sc->hw.device_id = PCI_PRODUCT(pa->pa_id); /* Do shared code init and setup. */ if (igc_set_mac_type(&sc->hw)) { printf(": Setup init failure\n"); return; } } int igc_allocate_pci_resources(struct igc_softc *sc) { struct igc_osdep *os = &sc->osdep; struct pci_attach_args *pa = &os->os_pa; pcireg_t memtype; memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, IGC_PCIREG); if (pci_mapreg_map(pa, IGC_PCIREG, memtype, 0, &os->os_memt, &os->os_memh, &os->os_membase, &os->os_memsize, 0)) { printf(": unable to map registers\n"); return ENXIO; } sc->hw.hw_addr = (uint8_t *)os->os_membase; sc->hw.back = os; igc_setup_msix(sc); return 0; } int igc_allocate_queues(struct igc_softc *sc) { struct igc_queue *iq; struct tx_ring *txr; struct rx_ring *rxr; int i, rsize, rxconf, tsize, txconf; /* Allocate the top level queue structs. */ sc->queues = mallocarray(sc->sc_nqueues, sizeof(struct igc_queue), M_DEVBUF, M_NOWAIT | M_ZERO); if (sc->queues == NULL) { printf("%s: unable to allocate queue\n", DEVNAME(sc)); goto fail; } /* Allocate the TX ring. */ sc->tx_rings = mallocarray(sc->sc_nqueues, sizeof(struct tx_ring), M_DEVBUF, M_NOWAIT | M_ZERO); if (sc->tx_rings == NULL) { printf("%s: unable to allocate TX ring\n", DEVNAME(sc)); goto fail; } /* Allocate the RX ring. */ sc->rx_rings = mallocarray(sc->sc_nqueues, sizeof(struct rx_ring), M_DEVBUF, M_NOWAIT | M_ZERO); if (sc->rx_rings == NULL) { printf("%s: unable to allocate RX ring\n", DEVNAME(sc)); goto rx_fail; } txconf = rxconf = 0; /* Set up the TX queues. */ tsize = roundup2(sc->num_tx_desc * sizeof(union igc_adv_tx_desc), IGC_DBA_ALIGN); for (i = 0; i < sc->sc_nqueues; i++, txconf++) { txr = &sc->tx_rings[i]; txr->sc = sc; txr->me = i; if (igc_dma_malloc(sc, tsize, &txr->txdma)) { printf("%s: unable to allocate TX descriptor\n", DEVNAME(sc)); goto err_tx_desc; } txr->tx_base = (union igc_adv_tx_desc *)txr->txdma.dma_vaddr; bzero((void *)txr->tx_base, tsize); } /* Set up the RX queues. */ rsize = roundup2(sc->num_rx_desc * sizeof(union igc_adv_rx_desc), IGC_DBA_ALIGN); for (i = 0; i < sc->sc_nqueues; i++, rxconf++) { rxr = &sc->rx_rings[i]; rxr->sc = sc; rxr->me = i; timeout_set(&rxr->rx_refill, igc_rxrefill, rxr); if (igc_dma_malloc(sc, rsize, &rxr->rxdma)) { printf("%s: unable to allocate RX descriptor\n", DEVNAME(sc)); goto err_rx_desc; } rxr->rx_base = (union igc_adv_rx_desc *)rxr->rxdma.dma_vaddr; bzero((void *)rxr->rx_base, rsize); } /* Set up the queue holding structs. */ for (i = 0; i < sc->sc_nqueues; i++) { iq = &sc->queues[i]; iq->sc = sc; iq->txr = &sc->tx_rings[i]; iq->rxr = &sc->rx_rings[i]; snprintf(iq->name, sizeof(iq->name), "%s:%d", DEVNAME(sc), i); } return 0; err_rx_desc: for (rxr = sc->rx_rings; rxconf > 0; rxr++, rxconf--) igc_dma_free(sc, &rxr->rxdma); err_tx_desc: for (txr = sc->tx_rings; txconf > 0; txr++, txconf--) igc_dma_free(sc, &txr->txdma); free(sc->rx_rings, M_DEVBUF, sc->sc_nqueues * sizeof(struct rx_ring)); sc->rx_rings = NULL; rx_fail: free(sc->tx_rings, M_DEVBUF, sc->sc_nqueues * sizeof(struct tx_ring)); sc->tx_rings = NULL; fail: return ENOMEM; } void igc_free_pci_resources(struct igc_softc *sc) { struct igc_osdep *os = &sc->osdep; struct pci_attach_args *pa = &os->os_pa; struct igc_queue *iq = sc->queues; int i; /* Release all msix queue resources. */ for (i = 0; i < sc->sc_nqueues; i++, iq++) { if (iq->tag) pci_intr_disestablish(pa->pa_pc, iq->tag); iq->tag = NULL; } if (sc->tag) pci_intr_disestablish(pa->pa_pc, sc->tag); sc->tag = NULL; if (os->os_membase != 0) bus_space_unmap(os->os_memt, os->os_memh, os->os_memsize); os->os_membase = 0; } /********************************************************************* * * Initialize the hardware to a configuration as specified by the * adapter structure. * **********************************************************************/ void igc_reset(struct igc_softc *sc) { struct igc_hw *hw = &sc->hw; uint32_t pba; uint16_t rx_buffer_size; /* Let the firmware know the OS is in control */ igc_get_hw_control(sc); /* * Packet Buffer Allocation (PBA) * Writing PBA sets the receive portion of the buffer * the remainder is used for the transmit buffer. */ pba = IGC_PBA_34K; /* * These parameters control the automatic generation (Tx) and * response (Rx) to Ethernet PAUSE frames. * - High water mark should allow for at least two frames to be * received after sending an XOFF. * - Low water mark works best when it is very near the high water mark. * This allows the receiver to restart by sending XON when it has * drained a bit. Here we use an arbitrary value of 1500 which will * restart after one full frame is pulled from the buffer. There * could be several smaller frames in the buffer and if so they will * not trigger the XON until their total number reduces the buffer * by 1500. * - The pause time is fairly large at 1000 x 512ns = 512 usec. */ rx_buffer_size = (pba & 0xffff) << 10; hw->fc.high_water = rx_buffer_size - roundup2(sc->hw.mac.max_frame_size, 1024); /* 16-byte granularity */ hw->fc.low_water = hw->fc.high_water - 16; if (sc->fc) /* locally set flow control value? */ hw->fc.requested_mode = sc->fc; else hw->fc.requested_mode = igc_fc_full; hw->fc.pause_time = IGC_FC_PAUSE_TIME; hw->fc.send_xon = true; /* Issue a global reset */ igc_reset_hw(hw); IGC_WRITE_REG(hw, IGC_WUC, 0); /* and a re-init */ if (igc_init_hw(hw) < 0) { printf(": Hardware Initialization Failed\n"); return; } /* Setup DMA Coalescing */ igc_init_dmac(sc, pba); IGC_WRITE_REG(hw, IGC_VET, ETHERTYPE_VLAN); igc_get_phy_info(hw); igc_check_for_link(hw); } /********************************************************************* * * Initialize the DMA Coalescing feature * **********************************************************************/ void igc_init_dmac(struct igc_softc *sc, uint32_t pba) { struct igc_hw *hw = &sc->hw; uint32_t dmac, reg = ~IGC_DMACR_DMAC_EN; uint16_t hwm, max_frame_size; int status; max_frame_size = sc->hw.mac.max_frame_size; if (sc->dmac == 0) { /* Disabling it */ IGC_WRITE_REG(hw, IGC_DMACR, reg); return; } else printf(": DMA Coalescing enabled\n"); /* Set starting threshold */ IGC_WRITE_REG(hw, IGC_DMCTXTH, 0); hwm = 64 * pba - max_frame_size / 16; if (hwm < 64 * (pba - 6)) hwm = 64 * (pba - 6); reg = IGC_READ_REG(hw, IGC_FCRTC); reg &= ~IGC_FCRTC_RTH_COAL_MASK; reg |= ((hwm << IGC_FCRTC_RTH_COAL_SHIFT) & IGC_FCRTC_RTH_COAL_MASK); IGC_WRITE_REG(hw, IGC_FCRTC, reg); dmac = pba - max_frame_size / 512; if (dmac < pba - 10) dmac = pba - 10; reg = IGC_READ_REG(hw, IGC_DMACR); reg &= ~IGC_DMACR_DMACTHR_MASK; reg |= ((dmac << IGC_DMACR_DMACTHR_SHIFT) & IGC_DMACR_DMACTHR_MASK); /* transition to L0x or L1 if available..*/ reg |= (IGC_DMACR_DMAC_EN | IGC_DMACR_DMAC_LX_MASK); /* Check if status is 2.5Gb backplane connection * before configuration of watchdog timer, which is * in msec values in 12.8usec intervals * watchdog timer= msec values in 32usec intervals * for non 2.5Gb connection */ status = IGC_READ_REG(hw, IGC_STATUS); if ((status & IGC_STATUS_2P5_SKU) && (!(status & IGC_STATUS_2P5_SKU_OVER))) reg |= ((sc->dmac * 5) >> 6); else reg |= (sc->dmac >> 5); IGC_WRITE_REG(hw, IGC_DMACR, reg); IGC_WRITE_REG(hw, IGC_DMCRTRH, 0); /* Set the interval before transition */ reg = IGC_READ_REG(hw, IGC_DMCTLX); reg |= IGC_DMCTLX_DCFLUSH_DIS; /* ** in 2.5Gb connection, TTLX unit is 0.4 usec ** which is 0x4*2 = 0xA. But delay is still 4 usec */ status = IGC_READ_REG(hw, IGC_STATUS); if ((status & IGC_STATUS_2P5_SKU) && (!(status & IGC_STATUS_2P5_SKU_OVER))) reg |= 0xA; else reg |= 0x4; IGC_WRITE_REG(hw, IGC_DMCTLX, reg); /* free space in tx packet buffer to wake from DMA coal */ IGC_WRITE_REG(hw, IGC_DMCTXTH, (IGC_TXPBSIZE - (2 * max_frame_size)) >> 6); /* make low power state decision controlled by DMA coal */ reg = IGC_READ_REG(hw, IGC_PCIEMISC); reg &= ~IGC_PCIEMISC_LX_DECISION; IGC_WRITE_REG(hw, IGC_PCIEMISC, reg); } int igc_allocate_msix(struct igc_softc *sc) { struct igc_osdep *os = &sc->osdep; struct pci_attach_args *pa = &os->os_pa; struct igc_queue *iq; pci_intr_handle_t ih; int i, error = 0; for (i = 0, iq = sc->queues; i < sc->sc_nqueues; i++, iq++) { if (pci_intr_map_msix(pa, i, &ih)) { printf("%s: unable to map msi-x vector %d\n", DEVNAME(sc), i); error = ENOMEM; goto fail; } iq->tag = pci_intr_establish_cpu(pa->pa_pc, ih, IPL_NET | IPL_MPSAFE, intrmap_cpu(sc->sc_intrmap, i), igc_intr_queue, iq, iq->name); if (iq->tag == NULL) { printf("%s: unable to establish interrupt %d\n", DEVNAME(sc), i); error = ENOMEM; goto fail; } iq->msix = i; iq->eims = 1 << i; } /* Now the link status/control last MSI-X vector. */ if (pci_intr_map_msix(pa, i, &ih)) { printf("%s: unable to map link vector\n", DEVNAME(sc)); error = ENOMEM; goto fail; } sc->tag = pci_intr_establish(pa->pa_pc, ih, IPL_NET | IPL_MPSAFE, igc_intr_link, sc, sc->sc_dev.dv_xname); if (sc->tag == NULL) { printf("%s: unable to establish link interrupt\n", DEVNAME(sc)); error = ENOMEM; goto fail; } sc->linkvec = i; printf(", %s, %d queue%s", pci_intr_string(pa->pa_pc, ih), i, (i > 1) ? "s" : ""); return 0; fail: for (iq = sc->queues; i > 0; i--, iq++) { if (iq->tag == NULL) continue; pci_intr_disestablish(pa->pa_pc, iq->tag); iq->tag = NULL; } return error; } void igc_setup_msix(struct igc_softc *sc) { struct igc_osdep *os = &sc->osdep; struct pci_attach_args *pa = &os->os_pa; int nmsix; nmsix = pci_intr_msix_count(pa); if (nmsix <= 1) printf(": not enough msi-x vectors\n"); /* Give one vector to events. */ nmsix--; sc->sc_intrmap = intrmap_create(&sc->sc_dev, nmsix, IGC_MAX_VECTORS, INTRMAP_POWEROF2); sc->sc_nqueues = intrmap_count(sc->sc_intrmap); } int igc_dma_malloc(struct igc_softc *sc, bus_size_t size, struct igc_dma_alloc *dma) { struct igc_osdep *os = &sc->osdep; dma->dma_tag = os->os_pa.pa_dmat; if (bus_dmamap_create(dma->dma_tag, size, 1, size, 0, BUS_DMA_NOWAIT, &dma->dma_map)) return 1; if (bus_dmamem_alloc(dma->dma_tag, size, PAGE_SIZE, 0, &dma->dma_seg, 1, &dma->dma_nseg, BUS_DMA_NOWAIT)) goto destroy; if (bus_dmamem_map(dma->dma_tag, &dma->dma_seg, dma->dma_nseg, size, &dma->dma_vaddr, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) goto free; if (bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr, size, NULL, BUS_DMA_NOWAIT)) goto unmap; dma->dma_size = size; return 0; unmap: bus_dmamem_unmap(dma->dma_tag, dma->dma_vaddr, size); free: bus_dmamem_free(dma->dma_tag, &dma->dma_seg, dma->dma_nseg); destroy: bus_dmamap_destroy(dma->dma_tag, dma->dma_map); dma->dma_map = NULL; dma->dma_tag = NULL; return 1; } void igc_dma_free(struct igc_softc *sc, struct igc_dma_alloc *dma) { if (dma->dma_tag == NULL) return; if (dma->dma_map != NULL) { bus_dmamap_sync(dma->dma_tag, dma->dma_map, 0, dma->dma_map->dm_mapsize, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(dma->dma_tag, dma->dma_map); bus_dmamem_unmap(dma->dma_tag, dma->dma_vaddr, dma->dma_size); bus_dmamem_free(dma->dma_tag, &dma->dma_seg, dma->dma_nseg); bus_dmamap_destroy(dma->dma_tag, dma->dma_map); dma->dma_map = NULL; } } /********************************************************************* * * Setup networking device structure and register an interface. * **********************************************************************/ void igc_setup_interface(struct igc_softc *sc) { struct ifnet *ifp = &sc->sc_ac.ac_if; int i; ifp->if_softc = sc; strlcpy(ifp->if_xname, DEVNAME(sc), IFNAMSIZ); ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_xflags = IFXF_MPSAFE; ifp->if_ioctl = igc_ioctl; ifp->if_qstart = igc_start; ifp->if_watchdog = igc_watchdog; ifp->if_hardmtu = sc->hw.mac.max_frame_size - ETHER_HDR_LEN - ETHER_CRC_LEN; ifq_set_maxlen(&ifp->if_snd, sc->num_tx_desc - 1); ifp->if_capabilities = IFCAP_VLAN_MTU; #ifdef notyet #if NVLAN > 0 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING; #endif #endif ifp->if_capabilities |= IFCAP_CSUM_IPv4; ifp->if_capabilities |= IFCAP_CSUM_TCPv4 | IFCAP_CSUM_UDPv4; ifp->if_capabilities |= IFCAP_CSUM_TCPv6 | IFCAP_CSUM_UDPv6; /* Initialize ifmedia structures. */ ifmedia_init(&sc->media, IFM_IMASK, igc_media_change, igc_media_status); ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T, 0, NULL); ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T | IFM_FDX, 0, NULL); ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX, 0, NULL); ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX | IFM_FDX, 0, NULL); ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL); ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_T, 0, NULL); ifmedia_add(&sc->media, IFM_ETHER | IFM_2500_T, 0, NULL); ifmedia_add(&sc->media, IFM_ETHER | IFM_AUTO, 0, NULL); ifmedia_set(&sc->media, IFM_ETHER | IFM_AUTO); if_attach(ifp); ether_ifattach(ifp); if_attach_queues(ifp, sc->sc_nqueues); if_attach_iqueues(ifp, sc->sc_nqueues); for (i = 0; i < sc->sc_nqueues; i++) { struct ifqueue *ifq = ifp->if_ifqs[i]; struct ifiqueue *ifiq = ifp->if_iqs[i]; struct tx_ring *txr = &sc->tx_rings[i]; struct rx_ring *rxr = &sc->rx_rings[i]; ifq->ifq_softc = txr; txr->ifq = ifq; ifiq->ifiq_softc = rxr; rxr->ifiq = ifiq; } } void igc_init(void *arg) { struct igc_softc *sc = (struct igc_softc *)arg; struct ifnet *ifp = &sc->sc_ac.ac_if; struct rx_ring *rxr; uint32_t ctrl = 0; int i, s; s = splnet(); igc_stop(sc); /* Get the latest mac address, user can use a LAA. */ bcopy(sc->sc_ac.ac_enaddr, sc->hw.mac.addr, ETHER_ADDR_LEN); /* Put the address into the receive address array. */ igc_rar_set(&sc->hw, sc->hw.mac.addr, 0); /* Initialize the hardware. */ igc_reset(sc); igc_update_link_status(sc); /* Setup VLAN support, basic and offload if available. */ IGC_WRITE_REG(&sc->hw, IGC_VET, ETHERTYPE_VLAN); /* Prepare transmit descriptors and buffers. */ if (igc_setup_transmit_structures(sc)) { printf("%s: Could not setup transmit structures\n", DEVNAME(sc)); igc_stop(sc); splx(s); return; } igc_initialize_transmit_unit(sc); sc->rx_mbuf_sz = MCLBYTES + ETHER_ALIGN; /* Prepare receive descriptors and buffers. */ if (igc_setup_receive_structures(sc)) { printf("%s: Could not setup receive structures\n", DEVNAME(sc)); igc_stop(sc); splx(s); return; } igc_initialize_receive_unit(sc); if (ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) { ctrl = IGC_READ_REG(&sc->hw, IGC_CTRL); ctrl |= IGC_CTRL_VME; IGC_WRITE_REG(&sc->hw, IGC_CTRL, ctrl); } /* Setup multicast table. */ igc_iff(sc); igc_clear_hw_cntrs_base_generic(&sc->hw); igc_configure_queues(sc); /* This clears any pending interrupts */ IGC_READ_REG(&sc->hw, IGC_ICR); IGC_WRITE_REG(&sc->hw, IGC_ICS, IGC_ICS_LSC); /* The driver can now take control from firmware. */ igc_get_hw_control(sc); /* Set Energy Efficient Ethernet. */ igc_set_eee_i225(&sc->hw, true, true, true); for (i = 0; i < sc->sc_nqueues; i++) { rxr = &sc->rx_rings[i]; igc_rxfill(rxr); if (if_rxr_inuse(&rxr->rx_ring) == 0) { printf("%s: Unable to fill any rx descriptors\n", DEVNAME(sc)); igc_stop(sc); splx(s); } IGC_WRITE_REG(&sc->hw, IGC_RDT(i), (rxr->last_desc_filled + 1) % sc->num_rx_desc); } igc_enable_intr(sc); ifp->if_flags |= IFF_RUNNING; for (i = 0; i < sc->sc_nqueues; i++) ifq_clr_oactive(ifp->if_ifqs[i]); splx(s); } static inline int igc_load_mbuf(bus_dma_tag_t dmat, bus_dmamap_t map, struct mbuf *m) { int error; error = bus_dmamap_load_mbuf(dmat, map, m, BUS_DMA_STREAMING | BUS_DMA_NOWAIT); if (error != EFBIG) return (error); error = m_defrag(m, M_DONTWAIT); if (error != 0) return (error); return (bus_dmamap_load_mbuf(dmat, map, m, BUS_DMA_STREAMING | BUS_DMA_NOWAIT)); } void igc_start(struct ifqueue *ifq) { struct ifnet *ifp = ifq->ifq_if; struct igc_softc *sc = ifp->if_softc; struct tx_ring *txr = ifq->ifq_softc; union igc_adv_tx_desc *txdesc; struct igc_tx_buf *txbuf; bus_dmamap_t map; struct mbuf *m; unsigned int prod, free, last, i; unsigned int mask; uint32_t cmd_type_len; uint32_t olinfo_status; int post = 0; #if NBPFILTER > 0 caddr_t if_bpf; #endif if (!sc->link_active) { ifq_purge(ifq); return; } prod = txr->next_avail_desc; free = txr->next_to_clean; if (free <= prod) free += sc->num_tx_desc; free -= prod; bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 0, txr->txdma.dma_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); mask = sc->num_tx_desc - 1; for (;;) { if (free <= IGC_MAX_SCATTER + 1) { ifq_set_oactive(ifq); break; } m = ifq_dequeue(ifq); if (m == NULL) break; txbuf = &txr->tx_buffers[prod]; map = txbuf->map; if (igc_load_mbuf(txr->txdma.dma_tag, map, m) != 0) { ifq->ifq_errors++; m_freem(m); continue; } olinfo_status = m->m_pkthdr.len << IGC_ADVTXD_PAYLEN_SHIFT; bus_dmamap_sync(txr->txdma.dma_tag, map, 0, map->dm_mapsize, BUS_DMASYNC_PREWRITE); if (igc_tx_ctx_setup(txr, m, prod, &olinfo_status)) { /* Consume the first descriptor */ prod++; prod &= mask; free--; } for (i = 0; i < map->dm_nsegs; i++) { txdesc = &txr->tx_base[prod]; cmd_type_len = IGC_ADVTXD_DCMD_IFCS | IGC_ADVTXD_DTYP_DATA | IGC_ADVTXD_DCMD_DEXT | map->dm_segs[i].ds_len; if (i == map->dm_nsegs - 1) cmd_type_len |= IGC_ADVTXD_DCMD_EOP | IGC_ADVTXD_DCMD_RS; htolem64(&txdesc->read.buffer_addr, map->dm_segs[i].ds_addr); htolem32(&txdesc->read.cmd_type_len, cmd_type_len); htolem32(&txdesc->read.olinfo_status, olinfo_status); last = prod; prod++; prod &= mask; } txbuf->m_head = m; txbuf->eop_index = last; #if NBPFILTER > 0 if_bpf = ifp->if_bpf; if (if_bpf) bpf_mtap_ether(if_bpf, m, BPF_DIRECTION_OUT); #endif free -= i; post = 1; } bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 0, txr->txdma.dma_map->dm_mapsize, BUS_DMASYNC_PREWRITE); if (post) { txr->next_avail_desc = prod; IGC_WRITE_REG(&sc->hw, IGC_TDT(txr->me), prod); } } int igc_txeof(struct tx_ring *txr) { struct igc_softc *sc = txr->sc; struct ifqueue *ifq = txr->ifq; union igc_adv_tx_desc *txdesc; struct igc_tx_buf *txbuf; bus_dmamap_t map; unsigned int cons, prod, last; unsigned int mask; int done = 0; prod = txr->next_avail_desc; cons = txr->next_to_clean; if (cons == prod) return (0); bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 0, txr->txdma.dma_map->dm_mapsize, BUS_DMASYNC_POSTREAD); mask = sc->num_tx_desc - 1; do { txbuf = &txr->tx_buffers[cons]; last = txbuf->eop_index; txdesc = &txr->tx_base[last]; if (!(txdesc->wb.status & htole32(IGC_TXD_STAT_DD))) break; map = txbuf->map; bus_dmamap_sync(txr->txdma.dma_tag, map, 0, map->dm_mapsize, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(txr->txdma.dma_tag, map); m_freem(txbuf->m_head); txbuf->m_head = NULL; txbuf->eop_index = -1; cons = last + 1; cons &= mask; done = 1; } while (cons != prod); bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 0, txr->txdma.dma_map->dm_mapsize, BUS_DMASYNC_PREREAD); txr->next_to_clean = cons; if (ifq_is_oactive(ifq)) ifq_restart(ifq); return (done); } /********************************************************************* * * This routine disables all traffic on the adapter by issuing a * global reset on the MAC. * **********************************************************************/ void igc_stop(struct igc_softc *sc) { struct ifnet *ifp = &sc->sc_ac.ac_if; int i; /* Tell the stack that the interface is no longer active. */ ifp->if_flags &= ~IFF_RUNNING; igc_disable_intr(sc); igc_reset_hw(&sc->hw); IGC_WRITE_REG(&sc->hw, IGC_WUC, 0); intr_barrier(sc->tag); for (i = 0; i < sc->sc_nqueues; i++) { struct ifqueue *ifq = ifp->if_ifqs[i]; ifq_barrier(ifq); ifq_clr_oactive(ifq); if (sc->queues[i].tag != NULL) intr_barrier(sc->queues[i].tag); timeout_del(&sc->rx_rings[i].rx_refill); } igc_free_transmit_structures(sc); igc_free_receive_structures(sc); igc_update_link_status(sc); } /********************************************************************* * Ioctl entry point * * igc_ioctl is called when the user wants to configure the * interface. * * return 0 on success, positive on failure **********************************************************************/ int igc_ioctl(struct ifnet * ifp, u_long cmd, caddr_t data) { struct igc_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *)data; int s, error = 0; s = splnet(); switch (cmd) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; if (!(ifp->if_flags & IFF_RUNNING)) igc_init(sc); break; case SIOCSIFFLAGS: if (ifp->if_flags & IFF_UP) { if (ifp->if_flags & IFF_RUNNING) error = ENETRESET; else igc_init(sc); } else { if (ifp->if_flags & IFF_RUNNING) igc_stop(sc); } break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &sc->media, cmd); break; case SIOCGIFRXR: error = igc_rxrinfo(sc, (struct if_rxrinfo *)ifr->ifr_data); break; default: error = ether_ioctl(ifp, &sc->sc_ac, cmd, data); } if (error == ENETRESET) { if (ifp->if_flags & IFF_RUNNING) { igc_disable_intr(sc); igc_iff(sc); igc_enable_intr(sc); } error = 0; } splx(s); return error; } int igc_rxrinfo(struct igc_softc *sc, struct if_rxrinfo *ifri) { struct if_rxring_info *ifr; struct rx_ring *rxr; int error, i, n = 0; if ((ifr = mallocarray(sc->sc_nqueues, sizeof(*ifr), M_DEVBUF, M_WAITOK | M_ZERO)) == NULL) return ENOMEM; for (i = 0; i < sc->sc_nqueues; i++) { rxr = &sc->rx_rings[i]; ifr[n].ifr_size = MCLBYTES; snprintf(ifr[n].ifr_name, sizeof(ifr[n].ifr_name), "%d", i); ifr[n].ifr_info = rxr->rx_ring; n++; } error = if_rxr_info_ioctl(ifri, sc->sc_nqueues, ifr); free(ifr, M_DEVBUF, sc->sc_nqueues * sizeof(*ifr)); return error; } int igc_rxfill(struct rx_ring *rxr) { struct igc_softc *sc = rxr->sc; int i, post = 0; u_int slots; bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, 0, rxr->rxdma.dma_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); i = rxr->last_desc_filled; for (slots = if_rxr_get(&rxr->rx_ring, sc->num_rx_desc); slots > 0; slots--) { if (++i == sc->num_rx_desc) i = 0; if (igc_get_buf(rxr, i) != 0) break; rxr->last_desc_filled = i; post = 1; } bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, 0, rxr->rxdma.dma_map->dm_mapsize, BUS_DMASYNC_PREWRITE); if_rxr_put(&rxr->rx_ring, slots); return post; } void igc_rxrefill(void *xrxr) { struct rx_ring *rxr = xrxr; struct igc_softc *sc = rxr->sc; if (igc_rxfill(rxr)) { IGC_WRITE_REG(&sc->hw, IGC_RDT(rxr->me), (rxr->last_desc_filled + 1) % sc->num_rx_desc); } else if (if_rxr_inuse(&rxr->rx_ring) == 0) timeout_add(&rxr->rx_refill, 1); } /********************************************************************* * * This routine executes in interrupt context. It replenishes * the mbufs in the descriptor and sends data which has been * dma'ed into host memory to upper layer. * *********************************************************************/ int igc_rxeof(struct rx_ring *rxr) { struct igc_softc *sc = rxr->sc; struct ifnet *ifp = &sc->sc_ac.ac_if; struct mbuf_list ml = MBUF_LIST_INITIALIZER(); struct mbuf *mp, *m; struct igc_rx_buf *rxbuf, *nxbuf; union igc_adv_rx_desc *rxdesc; uint32_t ptype, staterr = 0; uint16_t len, vtag; uint8_t eop = 0; int i, nextp; if (!ISSET(ifp->if_flags, IFF_RUNNING)) return 0; i = rxr->next_to_check; while (if_rxr_inuse(&rxr->rx_ring) > 0) { uint32_t hash; uint16_t hashtype; bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, i * sizeof(union igc_adv_rx_desc), sizeof(union igc_adv_rx_desc), BUS_DMASYNC_POSTREAD); rxdesc = &rxr->rx_base[i]; staterr = letoh32(rxdesc->wb.upper.status_error); if (!ISSET(staterr, IGC_RXD_STAT_DD)) { bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, i * sizeof(union igc_adv_rx_desc), sizeof(union igc_adv_rx_desc), BUS_DMASYNC_PREREAD); break; } /* Zero out the receive descriptors status. */ rxdesc->wb.upper.status_error = 0; rxbuf = &rxr->rx_buffers[i]; /* Pull the mbuf off the ring. */ bus_dmamap_sync(rxr->rxdma.dma_tag, rxbuf->map, 0, rxbuf->map->dm_mapsize, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(rxr->rxdma.dma_tag, rxbuf->map); mp = rxbuf->buf; len = letoh16(rxdesc->wb.upper.length); vtag = letoh16(rxdesc->wb.upper.vlan); eop = ((staterr & IGC_RXD_STAT_EOP) == IGC_RXD_STAT_EOP); ptype = letoh32(rxdesc->wb.lower.lo_dword.data) & IGC_PKTTYPE_MASK; hash = letoh32(rxdesc->wb.lower.hi_dword.rss); hashtype = le16toh(rxdesc->wb.lower.lo_dword.hs_rss.pkt_info) & IGC_RXDADV_RSSTYPE_MASK; if (staterr & IGC_RXDEXT_STATERR_RXE) { if (rxbuf->fmp) { m_freem(rxbuf->fmp); rxbuf->fmp = NULL; } m_freem(mp); rxbuf->buf = NULL; goto next_desc; } if (mp == NULL) { panic("%s: igc_rxeof: NULL mbuf in slot %d " "(nrx %d, filled %d)", DEVNAME(sc), i, if_rxr_inuse(&rxr->rx_ring), rxr->last_desc_filled); } if (!eop) { /* * Figure out the next descriptor of this frame. */ nextp = i + 1; if (nextp == sc->num_rx_desc) nextp = 0; nxbuf = &rxr->rx_buffers[nextp]; /* prefetch(nxbuf); */ } mp->m_len = len; m = rxbuf->fmp; rxbuf->buf = rxbuf->fmp = NULL; if (m != NULL) m->m_pkthdr.len += mp->m_len; else { m = mp; m->m_pkthdr.len = mp->m_len; #if NVLAN > 0 if (staterr & IGC_RXD_STAT_VP) { m->m_pkthdr.ether_vtag = vtag; m->m_flags |= M_VLANTAG; } #endif } /* Pass the head pointer on */ if (eop == 0) { nxbuf->fmp = m; m = NULL; mp->m_next = nxbuf->buf; } else { igc_rx_checksum(staterr, m, ptype); if (hashtype != IGC_RXDADV_RSSTYPE_NONE) { m->m_pkthdr.ph_flowid = hash; SET(m->m_pkthdr.csum_flags, M_FLOWID); } ml_enqueue(&ml, m); } next_desc: if_rxr_put(&rxr->rx_ring, 1); bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, i * sizeof(union igc_adv_rx_desc), sizeof(union igc_adv_rx_desc), BUS_DMASYNC_PREREAD); /* Advance our pointers to the next descriptor. */ if (++i == sc->num_rx_desc) i = 0; } rxr->next_to_check = i; if (ifiq_input(rxr->ifiq, &ml)) if_rxr_livelocked(&rxr->rx_ring); if (!(staterr & IGC_RXD_STAT_DD)) return 0; return 1; } /********************************************************************* * * Verify that the hardware indicated that the checksum is valid. * Inform the stack about the status of checksum so that stack * doesn't spend time verifying the checksum. * *********************************************************************/ void igc_rx_checksum(uint32_t staterr, struct mbuf *m, uint32_t ptype) { uint16_t status = (uint16_t)staterr; uint8_t errors = (uint8_t)(staterr >> 24); if (status & IGC_RXD_STAT_IPCS) { if (!(errors & IGC_RXD_ERR_IPE)) { /* IP Checksum Good */ m->m_pkthdr.csum_flags = M_IPV4_CSUM_IN_OK; } else m->m_pkthdr.csum_flags = 0; } if (status & (IGC_RXD_STAT_TCPCS | IGC_RXD_STAT_UDPCS)) { if (!(errors & IGC_RXD_ERR_TCPE)) m->m_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK | M_UDP_CSUM_IN_OK; } } void igc_watchdog(struct ifnet * ifp) { } /********************************************************************* * * Media Ioctl callback * * This routine is called whenever the user queries the status of * the interface using ifconfig. * **********************************************************************/ void igc_media_status(struct ifnet *ifp, struct ifmediareq *ifmr) { struct igc_softc *sc = ifp->if_softc; igc_update_link_status(sc); ifmr->ifm_status = IFM_AVALID; ifmr->ifm_active = IFM_ETHER; if (!sc->link_active) { ifmr->ifm_active |= IFM_NONE; return; } ifmr->ifm_status |= IFM_ACTIVE; switch (sc->link_speed) { case 10: ifmr->ifm_active |= IFM_10_T; break; case 100: ifmr->ifm_active |= IFM_100_TX; break; case 1000: ifmr->ifm_active |= IFM_1000_T; break; case 2500: ifmr->ifm_active |= IFM_2500_T; break; } if (sc->link_duplex == FULL_DUPLEX) ifmr->ifm_active |= IFM_FDX; else ifmr->ifm_active |= IFM_HDX; } /********************************************************************* * * Media Ioctl callback * * This routine is called when the user changes speed/duplex using * media/mediopt option with ifconfig. * **********************************************************************/ int igc_media_change(struct ifnet *ifp) { struct igc_softc *sc = ifp->if_softc; struct ifmedia *ifm = &sc->media; if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) return (EINVAL); sc->hw.mac.autoneg = DO_AUTO_NEG; switch (IFM_SUBTYPE(ifm->ifm_media)) { case IFM_AUTO: sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT; break; case IFM_2500_T: sc->hw.phy.autoneg_advertised = ADVERTISE_2500_FULL; break; case IFM_1000_T: sc->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; break; case IFM_100_TX: if ((ifm->ifm_media & IFM_GMASK) == IFM_HDX) sc->hw.phy.autoneg_advertised = ADVERTISE_100_HALF; else sc->hw.phy.autoneg_advertised = ADVERTISE_100_FULL; break; case IFM_10_T: if ((ifm->ifm_media & IFM_GMASK) == IFM_HDX) sc->hw.phy.autoneg_advertised = ADVERTISE_10_HALF; else sc->hw.phy.autoneg_advertised = ADVERTISE_10_FULL; break; default: return EINVAL; } igc_init(sc); return 0; } void igc_iff(struct igc_softc *sc) { struct ifnet *ifp = &sc->sc_ac.ac_if; struct arpcom *ac = &sc->sc_ac; struct ether_multi *enm; struct ether_multistep step; uint32_t reg_rctl = 0; uint8_t *mta; int mcnt = 0; mta = sc->mta; bzero(mta, sizeof(uint8_t) * ETHER_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES); reg_rctl = IGC_READ_REG(&sc->hw, IGC_RCTL); reg_rctl &= ~(IGC_RCTL_UPE | IGC_RCTL_MPE); ifp->if_flags &= ~IFF_ALLMULTI; if (ifp->if_flags & IFF_PROMISC || ac->ac_multirangecnt > 0 || ac->ac_multicnt > MAX_NUM_MULTICAST_ADDRESSES) { ifp->if_flags |= IFF_ALLMULTI; reg_rctl |= IGC_RCTL_MPE; if (ifp->if_flags & IFF_PROMISC) reg_rctl |= IGC_RCTL_UPE; } else { ETHER_FIRST_MULTI(step, ac, enm); while (enm != NULL) { bcopy(enm->enm_addrlo, &mta[mcnt * ETHER_ADDR_LEN], ETHER_ADDR_LEN); mcnt++; ETHER_NEXT_MULTI(step, enm); } igc_update_mc_addr_list(&sc->hw, mta, mcnt); } IGC_WRITE_REG(&sc->hw, IGC_RCTL, reg_rctl); } void igc_update_link_status(struct igc_softc *sc) { struct ifnet *ifp = &sc->sc_ac.ac_if; struct igc_hw *hw = &sc->hw; int link_state; if (IGC_READ_REG(&sc->hw, IGC_STATUS) & IGC_STATUS_LU) { if (sc->link_active == 0) { igc_get_speed_and_duplex(hw, &sc->link_speed, &sc->link_duplex); sc->link_active = 1; ifp->if_baudrate = IF_Mbps(sc->link_speed); } link_state = (sc->link_duplex == FULL_DUPLEX) ? LINK_STATE_FULL_DUPLEX : LINK_STATE_HALF_DUPLEX; } else { if (sc->link_active == 1) { ifp->if_baudrate = sc->link_speed = 0; sc->link_duplex = 0; sc->link_active = 0; } link_state = LINK_STATE_DOWN; } if (ifp->if_link_state != link_state) { ifp->if_link_state = link_state; if_link_state_change(ifp); } } /********************************************************************* * * Get a buffer from system mbuf buffer pool. * **********************************************************************/ int igc_get_buf(struct rx_ring *rxr, int i) { struct igc_softc *sc = rxr->sc; struct igc_rx_buf *rxbuf; struct mbuf *m; union igc_adv_rx_desc *rxdesc; int error; rxbuf = &rxr->rx_buffers[i]; rxdesc = &rxr->rx_base[i]; if (rxbuf->buf) { printf("%s: slot %d already has an mbuf\n", DEVNAME(sc), i); return ENOBUFS; } m = MCLGETL(NULL, M_DONTWAIT, sc->rx_mbuf_sz); if (!m) return ENOBUFS; m->m_data += (m->m_ext.ext_size - sc->rx_mbuf_sz); m->m_len = m->m_pkthdr.len = sc->rx_mbuf_sz; error = bus_dmamap_load_mbuf(rxr->rxdma.dma_tag, rxbuf->map, m, BUS_DMA_NOWAIT); if (error) { m_freem(m); return error; } bus_dmamap_sync(rxr->rxdma.dma_tag, rxbuf->map, 0, rxbuf->map->dm_mapsize, BUS_DMASYNC_PREREAD); rxbuf->buf = m; rxdesc->read.pkt_addr = htole64(rxbuf->map->dm_segs[0].ds_addr); return 0; } void igc_configure_queues(struct igc_softc *sc) { struct igc_hw *hw = &sc->hw; struct igc_queue *iq = sc->queues; uint32_t ivar, newitr = 0; int i; /* First turn on RSS capability */ IGC_WRITE_REG(hw, IGC_GPIE, IGC_GPIE_MSIX_MODE | IGC_GPIE_EIAME | IGC_GPIE_PBA | IGC_GPIE_NSICR); /* Set the starting interrupt rate */ newitr = (4000000 / MAX_INTS_PER_SEC) & 0x7FFC; newitr |= IGC_EITR_CNT_IGNR; /* Turn on MSI-X */ for (i = 0; i < sc->sc_nqueues; i++, iq++) { /* RX entries */ igc_set_queues(sc, i, iq->msix, 0); /* TX entries */ igc_set_queues(sc, i, iq->msix, 1); sc->msix_queuesmask |= iq->eims; IGC_WRITE_REG(hw, IGC_EITR(iq->msix), newitr); } /* And for the link interrupt */ ivar = (sc->linkvec | IGC_IVAR_VALID) << 8; sc->msix_linkmask = 1 << sc->linkvec; IGC_WRITE_REG(hw, IGC_IVAR_MISC, ivar); } void igc_set_queues(struct igc_softc *sc, uint32_t entry, uint32_t vector, int type) { struct igc_hw *hw = &sc->hw; uint32_t ivar, index; index = entry >> 1; ivar = IGC_READ_REG_ARRAY(hw, IGC_IVAR0, index); if (type) { if (entry & 1) { ivar &= 0x00FFFFFF; ivar |= (vector | IGC_IVAR_VALID) << 24; } else { ivar &= 0xFFFF00FF; ivar |= (vector | IGC_IVAR_VALID) << 8; } } else { if (entry & 1) { ivar &= 0xFF00FFFF; ivar |= (vector | IGC_IVAR_VALID) << 16; } else { ivar &= 0xFFFFFF00; ivar |= vector | IGC_IVAR_VALID; } } IGC_WRITE_REG_ARRAY(hw, IGC_IVAR0, index, ivar); } void igc_enable_queue(struct igc_softc *sc, uint32_t eims) { IGC_WRITE_REG(&sc->hw, IGC_EIMS, eims); } void igc_enable_intr(struct igc_softc *sc) { struct igc_hw *hw = &sc->hw; uint32_t mask; mask = (sc->msix_queuesmask | sc->msix_linkmask); IGC_WRITE_REG(hw, IGC_EIAC, mask); IGC_WRITE_REG(hw, IGC_EIAM, mask); IGC_WRITE_REG(hw, IGC_EIMS, mask); IGC_WRITE_REG(hw, IGC_IMS, IGC_IMS_LSC); IGC_WRITE_FLUSH(hw); } void igc_disable_intr(struct igc_softc *sc) { struct igc_hw *hw = &sc->hw; IGC_WRITE_REG(hw, IGC_EIMC, 0xffffffff); IGC_WRITE_REG(hw, IGC_EIAC, 0); IGC_WRITE_REG(hw, IGC_IMC, 0xffffffff); IGC_WRITE_FLUSH(hw); } int igc_intr_link(void *arg) { struct igc_softc *sc = (struct igc_softc *)arg; uint32_t reg_icr = IGC_READ_REG(&sc->hw, IGC_ICR); if (reg_icr & IGC_ICR_LSC) { KERNEL_LOCK(); sc->hw.mac.get_link_status = true; igc_update_link_status(sc); KERNEL_UNLOCK(); } IGC_WRITE_REG(&sc->hw, IGC_IMS, IGC_IMS_LSC); IGC_WRITE_REG(&sc->hw, IGC_EIMS, sc->msix_linkmask); return 1; } int igc_intr_queue(void *arg) { struct igc_queue *iq = arg; struct igc_softc *sc = iq->sc; struct ifnet *ifp = &sc->sc_ac.ac_if; struct rx_ring *rxr = iq->rxr; struct tx_ring *txr = iq->txr; if (ifp->if_flags & IFF_RUNNING) { igc_txeof(txr); igc_rxeof(rxr); igc_rxrefill(rxr); } igc_enable_queue(sc, iq->eims); return 1; } /********************************************************************* * * Allocate memory for tx_buffer structures. The tx_buffer stores all * the information needed to transmit a packet on the wire. * **********************************************************************/ int igc_allocate_transmit_buffers(struct tx_ring *txr) { struct igc_softc *sc = txr->sc; struct igc_tx_buf *txbuf; int error, i; txr->tx_buffers = mallocarray(sc->num_tx_desc, sizeof(struct igc_tx_buf), M_DEVBUF, M_NOWAIT | M_ZERO); if (txr->tx_buffers == NULL) { printf("%s: Unable to allocate tx_buffer memory\n", DEVNAME(sc)); error = ENOMEM; goto fail; } txr->txtag = txr->txdma.dma_tag; /* Create the descriptor buffer dma maps. */ for (i = 0; i < sc->num_tx_desc; i++) { txbuf = &txr->tx_buffers[i]; error = bus_dmamap_create(txr->txdma.dma_tag, IGC_TSO_SIZE, IGC_MAX_SCATTER, PAGE_SIZE, 0, BUS_DMA_NOWAIT, &txbuf->map); if (error != 0) { printf("%s: Unable to create TX DMA map\n", DEVNAME(sc)); goto fail; } } return 0; fail: return error; } /********************************************************************* * * Allocate and initialize transmit structures. * **********************************************************************/ int igc_setup_transmit_structures(struct igc_softc *sc) { struct tx_ring *txr = sc->tx_rings; int i; for (i = 0; i < sc->sc_nqueues; i++, txr++) { if (igc_setup_transmit_ring(txr)) goto fail; } return 0; fail: igc_free_transmit_structures(sc); return ENOBUFS; } /********************************************************************* * * Initialize a transmit ring. * **********************************************************************/ int igc_setup_transmit_ring(struct tx_ring *txr) { struct igc_softc *sc = txr->sc; /* Now allocate transmit buffers for the ring. */ if (igc_allocate_transmit_buffers(txr)) return ENOMEM; /* Clear the old ring contents */ bzero((void *)txr->tx_base, (sizeof(union igc_adv_tx_desc)) * sc->num_tx_desc); /* Reset indices. */ txr->next_avail_desc = 0; txr->next_to_clean = 0; bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 0, txr->txdma.dma_map->dm_mapsize, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); return 0; } /********************************************************************* * * Enable transmit unit. * **********************************************************************/ void igc_initialize_transmit_unit(struct igc_softc *sc) { struct ifnet *ifp = &sc->sc_ac.ac_if; struct tx_ring *txr; struct igc_hw *hw = &sc->hw; uint64_t bus_addr; uint32_t tctl, txdctl = 0; int i; /* Setup the Base and Length of the TX descriptor ring. */ for (i = 0; i < sc->sc_nqueues; i++) { txr = &sc->tx_rings[i]; bus_addr = txr->txdma.dma_map->dm_segs[0].ds_addr; /* Base and len of TX ring */ IGC_WRITE_REG(hw, IGC_TDLEN(i), sc->num_tx_desc * sizeof(union igc_adv_tx_desc)); IGC_WRITE_REG(hw, IGC_TDBAH(i), (uint32_t)(bus_addr >> 32)); IGC_WRITE_REG(hw, IGC_TDBAL(i), (uint32_t)bus_addr); /* Init the HEAD/TAIL indices */ IGC_WRITE_REG(hw, IGC_TDT(i), 0); IGC_WRITE_REG(hw, IGC_TDH(i), 0); txr->watchdog_timer = 0; txdctl = 0; /* Clear txdctl */ txdctl |= 0x1f; /* PTHRESH */ txdctl |= 1 << 8; /* HTHRESH */ txdctl |= 1 << 16; /* WTHRESH */ txdctl |= 1 << 22; /* Reserved bit 22 must always be 1 */ txdctl |= IGC_TXDCTL_GRAN; txdctl |= 1 << 25; /* LWTHRESH */ IGC_WRITE_REG(hw, IGC_TXDCTL(i), txdctl); } ifp->if_timer = 0; /* Program the Transmit Control Register */ tctl = IGC_READ_REG(&sc->hw, IGC_TCTL); tctl &= ~IGC_TCTL_CT; tctl |= (IGC_TCTL_PSP | IGC_TCTL_RTLC | IGC_TCTL_EN | (IGC_COLLISION_THRESHOLD << IGC_CT_SHIFT)); /* This write will effectively turn on the transmit unit. */ IGC_WRITE_REG(&sc->hw, IGC_TCTL, tctl); } /********************************************************************* * * Free all transmit rings. * **********************************************************************/ void igc_free_transmit_structures(struct igc_softc *sc) { struct tx_ring *txr = sc->tx_rings; int i; for (i = 0; i < sc->sc_nqueues; i++, txr++) igc_free_transmit_buffers(txr); } /********************************************************************* * * Free transmit ring related data structures. * **********************************************************************/ void igc_free_transmit_buffers(struct tx_ring *txr) { struct igc_softc *sc = txr->sc; struct igc_tx_buf *txbuf; int i; if (txr->tx_buffers == NULL) return; txbuf = txr->tx_buffers; for (i = 0; i < sc->num_tx_desc; i++, txbuf++) { if (txbuf->map != NULL && txbuf->map->dm_nsegs > 0) { bus_dmamap_sync(txr->txdma.dma_tag, txbuf->map, 0, txbuf->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(txr->txdma.dma_tag, txbuf->map); } if (txbuf->m_head != NULL) { m_freem(txbuf->m_head); txbuf->m_head = NULL; } if (txbuf->map != NULL) { bus_dmamap_destroy(txr->txdma.dma_tag, txbuf->map); txbuf->map = NULL; } } if (txr->tx_buffers != NULL) free(txr->tx_buffers, M_DEVBUF, sc->num_tx_desc * sizeof(struct igc_tx_buf)); txr->tx_buffers = NULL; txr->txtag = NULL; } /********************************************************************* * * Advanced Context Descriptor setup for VLAN, CSUM or TSO * **********************************************************************/ int igc_tx_ctx_setup(struct tx_ring *txr, struct mbuf *mp, int prod, uint32_t *olinfo_status) { struct igc_adv_tx_context_desc *txdesc; struct ether_header *eh = mtod(mp, struct ether_header *); struct mbuf *m; uint32_t type_tucmd_mlhl = 0; uint32_t vlan_macip_lens = 0; uint32_t iphlen; int hoff; int off = 0; uint8_t ipproto; vlan_macip_lens |= (sizeof(*eh) << IGC_ADVTXD_MACLEN_SHIFT); /* * In advanced descriptors the vlan tag must * be placed into the context descriptor. Hence * we need to make one even if not doing offloads. */ #ifdef notyet #if NVLAN > 0 if (ISSET(mp->m_flags, M_VLANTAG)) { uint32_t vtag = mp->m_pkthdr.ether_vtag; vlan_macip_lens |= (vtag << IGC_ADVTXD_VLAN_SHIFT); off = 1; } #endif #endif switch (ntohs(eh->ether_type)) { case ETHERTYPE_IP: { struct ip *ip; m = m_getptr(mp, sizeof(*eh), &hoff); KASSERT(m != NULL && m->m_len - hoff >= sizeof(*ip)); ip = (struct ip *)(mtod(m, caddr_t) + hoff); iphlen = ip->ip_hl << 2; ipproto = ip->ip_p; type_tucmd_mlhl |= IGC_ADVTXD_TUCMD_IPV4; if (ISSET(mp->m_pkthdr.csum_flags, M_IPV4_CSUM_OUT)) { *olinfo_status |= IGC_TXD_POPTS_IXSM << 8; off = 1; } break; } #ifdef INET6 case ETHERTYPE_IPV6: { struct ip6_hdr *ip6; m = m_getptr(mp, sizeof(*eh), &hoff); KASSERT(m != NULL && m->m_len - hoff >= sizeof(*ip6)); ip6 = (struct ip6_hdr *)(mtod(m, caddr_t) + hoff); iphlen = sizeof(*ip6); ipproto = ip6->ip6_nxt; type_tucmd_mlhl |= IGC_ADVTXD_TUCMD_IPV6; break; } #endif default: return 0; } vlan_macip_lens |= iphlen; type_tucmd_mlhl |= IGC_ADVTXD_DCMD_DEXT | IGC_ADVTXD_DTYP_CTXT; switch (ipproto) { case IPPROTO_TCP: type_tucmd_mlhl |= IGC_ADVTXD_TUCMD_L4T_TCP; if (ISSET(mp->m_pkthdr.csum_flags, M_TCP_CSUM_OUT)) { *olinfo_status |= IGC_TXD_POPTS_TXSM << 8; off = 1; } break; case IPPROTO_UDP: type_tucmd_mlhl |= IGC_ADVTXD_TUCMD_L4T_UDP; if (ISSET(mp->m_pkthdr.csum_flags, M_UDP_CSUM_OUT)) { *olinfo_status |= IGC_TXD_POPTS_TXSM << 8; off = 1; } break; } if (off == 0) return 0; /* Now ready a context descriptor */ txdesc = (struct igc_adv_tx_context_desc *)&txr->tx_base[prod]; /* Now copy bits into descriptor */ htolem32(&txdesc->vlan_macip_lens, vlan_macip_lens); htolem32(&txdesc->type_tucmd_mlhl, type_tucmd_mlhl); htolem32(&txdesc->seqnum_seed, 0); htolem32(&txdesc->mss_l4len_idx, 0); return 1; } /********************************************************************* * * Allocate memory for rx_buffer structures. Since we use one * rx_buffer per received packet, the maximum number of rx_buffer's * that we'll need is equal to the number of receive descriptors * that we've allocated. * **********************************************************************/ int igc_allocate_receive_buffers(struct rx_ring *rxr) { struct igc_softc *sc = rxr->sc; struct igc_rx_buf *rxbuf; int i, error; rxr->rx_buffers = mallocarray(sc->num_rx_desc, sizeof(struct igc_rx_buf), M_DEVBUF, M_NOWAIT | M_ZERO); if (rxr->rx_buffers == NULL) { printf("%s: Unable to allocate rx_buffer memory\n", DEVNAME(sc)); error = ENOMEM; goto fail; } rxbuf = rxr->rx_buffers; for (i = 0; i < sc->num_rx_desc; i++, rxbuf++) { error = bus_dmamap_create(rxr->rxdma.dma_tag, MAX_JUMBO_FRAME_SIZE, 1, MAX_JUMBO_FRAME_SIZE, 0, BUS_DMA_NOWAIT, &rxbuf->map); if (error) { printf("%s: Unable to create RX DMA map\n", DEVNAME(sc)); goto fail; } } bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, 0, rxr->rxdma.dma_map->dm_mapsize, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); return 0; fail: return error; } /********************************************************************* * * Allocate and initialize receive structures. * **********************************************************************/ int igc_setup_receive_structures(struct igc_softc *sc) { struct rx_ring *rxr = sc->rx_rings; int i; for (i = 0; i < sc->sc_nqueues; i++, rxr++) { if (igc_setup_receive_ring(rxr)) goto fail; } return 0; fail: igc_free_receive_structures(sc); return ENOBUFS; } /********************************************************************* * * Initialize a receive ring and its buffers. * **********************************************************************/ int igc_setup_receive_ring(struct rx_ring *rxr) { struct igc_softc *sc = rxr->sc; struct ifnet *ifp = &sc->sc_ac.ac_if; int rsize; rsize = roundup2(sc->num_rx_desc * sizeof(union igc_adv_rx_desc), IGC_DBA_ALIGN); /* Clear the ring contents. */ bzero((void *)rxr->rx_base, rsize); if (igc_allocate_receive_buffers(rxr)) return ENOMEM; /* Setup our descriptor indices. */ rxr->next_to_check = 0; rxr->last_desc_filled = sc->num_rx_desc - 1; if_rxr_init(&rxr->rx_ring, 2 * ((ifp->if_hardmtu / MCLBYTES) + 1), sc->num_rx_desc - 1); return 0; } /********************************************************************* * * Enable receive unit. * **********************************************************************/ void igc_initialize_receive_unit(struct igc_softc *sc) { struct rx_ring *rxr = sc->rx_rings; struct igc_hw *hw = &sc->hw; uint32_t rctl, rxcsum, srrctl = 0; int i; /* * Make sure receives are disabled while setting * up the descriptor ring. */ rctl = IGC_READ_REG(hw, IGC_RCTL); IGC_WRITE_REG(hw, IGC_RCTL, rctl & ~IGC_RCTL_EN); /* Setup the Receive Control Register */ rctl &= ~(3 << IGC_RCTL_MO_SHIFT); rctl |= IGC_RCTL_EN | IGC_RCTL_BAM | IGC_RCTL_LBM_NO | IGC_RCTL_RDMTS_HALF | (hw->mac.mc_filter_type << IGC_RCTL_MO_SHIFT); /* Do not store bad packets */ rctl &= ~IGC_RCTL_SBP; /* Enable Long Packet receive */ if (sc->hw.mac.max_frame_size != ETHER_MAX_LEN) rctl |= IGC_RCTL_LPE; /* Strip the CRC */ rctl |= IGC_RCTL_SECRC; /* * Set the interrupt throttling rate. Value is calculated * as DEFAULT_ITR = 1/(MAX_INTS_PER_SEC * 256ns) */ IGC_WRITE_REG(hw, IGC_ITR, DEFAULT_ITR); rxcsum = IGC_READ_REG(hw, IGC_RXCSUM); rxcsum &= ~IGC_RXCSUM_PCSD; if (sc->sc_nqueues > 1) rxcsum |= IGC_RXCSUM_PCSD; IGC_WRITE_REG(hw, IGC_RXCSUM, rxcsum); if (sc->sc_nqueues > 1) igc_initialize_rss_mapping(sc); #if 0 srrctl |= 4096 >> IGC_SRRCTL_BSIZEPKT_SHIFT; rctl |= IGC_RCTL_SZ_4096 | IGC_RCTL_BSEX; #endif srrctl |= 2048 >> IGC_SRRCTL_BSIZEPKT_SHIFT; rctl |= IGC_RCTL_SZ_2048; /* * If TX flow control is disabled and there's > 1 queue defined, * enable DROP. * * This drops frames rather than hanging the RX MAC for all queues. */ if ((sc->sc_nqueues > 1) && (sc->fc == igc_fc_none || sc->fc == igc_fc_rx_pause)) { srrctl |= IGC_SRRCTL_DROP_EN; } /* Setup the Base and Length of the RX descriptor rings. */ for (i = 0; i < sc->sc_nqueues; i++, rxr++) { IGC_WRITE_REG(hw, IGC_RXDCTL(i), 0); uint64_t bus_addr = rxr->rxdma.dma_map->dm_segs[0].ds_addr; uint32_t rxdctl; srrctl |= IGC_SRRCTL_DESCTYPE_ADV_ONEBUF; IGC_WRITE_REG(hw, IGC_RDLEN(i), sc->num_rx_desc * sizeof(union igc_adv_rx_desc)); IGC_WRITE_REG(hw, IGC_RDBAH(i), (uint32_t)(bus_addr >> 32)); IGC_WRITE_REG(hw, IGC_RDBAL(i), (uint32_t)bus_addr); IGC_WRITE_REG(hw, IGC_SRRCTL(i), srrctl); /* Setup the Head and Tail Descriptor Pointers */ IGC_WRITE_REG(hw, IGC_RDH(i), 0); IGC_WRITE_REG(hw, IGC_RDT(i), 0); /* Enable this Queue */ rxdctl = IGC_READ_REG(hw, IGC_RXDCTL(i)); rxdctl |= IGC_RXDCTL_QUEUE_ENABLE; rxdctl &= 0xFFF00000; rxdctl |= IGC_RX_PTHRESH; rxdctl |= IGC_RX_HTHRESH << 8; rxdctl |= IGC_RX_WTHRESH << 16; IGC_WRITE_REG(hw, IGC_RXDCTL(i), rxdctl); } /* Make sure VLAN Filters are off */ rctl &= ~IGC_RCTL_VFE; /* Write out the settings */ IGC_WRITE_REG(hw, IGC_RCTL, rctl); } /********************************************************************* * * Free all receive rings. * **********************************************************************/ void igc_free_receive_structures(struct igc_softc *sc) { struct rx_ring *rxr; int i; for (i = 0, rxr = sc->rx_rings; i < sc->sc_nqueues; i++, rxr++) if_rxr_init(&rxr->rx_ring, 0, 0); for (i = 0, rxr = sc->rx_rings; i < sc->sc_nqueues; i++, rxr++) igc_free_receive_buffers(rxr); } /********************************************************************* * * Free receive ring data structures * **********************************************************************/ void igc_free_receive_buffers(struct rx_ring *rxr) { struct igc_softc *sc = rxr->sc; struct igc_rx_buf *rxbuf; int i; if (rxr->rx_buffers != NULL) { for (i = 0; i < sc->num_rx_desc; i++) { rxbuf = &rxr->rx_buffers[i]; if (rxbuf->buf != NULL) { bus_dmamap_sync(rxr->rxdma.dma_tag, rxbuf->map, 0, rxbuf->map->dm_mapsize, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(rxr->rxdma.dma_tag, rxbuf->map); m_freem(rxbuf->buf); rxbuf->buf = NULL; } bus_dmamap_destroy(rxr->rxdma.dma_tag, rxbuf->map); rxbuf->map = NULL; } free(rxr->rx_buffers, M_DEVBUF, sc->num_rx_desc * sizeof(struct igc_rx_buf)); rxr->rx_buffers = NULL; } } /* * Initialise the RSS mapping for NICs that support multiple transmit/ * receive rings. */ void igc_initialize_rss_mapping(struct igc_softc *sc) { struct igc_hw *hw = &sc->hw; uint32_t rss_key[10], mrqc, reta, shift = 0; int i, queue_id; /* * The redirection table controls which destination * queue each bucket redirects traffic to. * Each DWORD represents four queues, with the LSB * being the first queue in the DWORD. * * This just allocates buckets to queues using round-robin * allocation. * * NOTE: It Just Happens to line up with the default * RSS allocation method. */ /* Warning FM follows */ reta = 0; for (i = 0; i < 128; i++) { queue_id = (i % sc->sc_nqueues); /* Adjust if required */ queue_id = queue_id << shift; /* * The low 8 bits are for hash value (n+0); * The next 8 bits are for hash value (n+1), etc. */ reta = reta >> 8; reta = reta | ( ((uint32_t) queue_id) << 24); if ((i & 3) == 3) { IGC_WRITE_REG(hw, IGC_RETA(i >> 2), reta); reta = 0; } } /* * MRQC: Multiple Receive Queues Command * Set queuing to RSS control, number depends on the device. */ mrqc = IGC_MRQC_ENABLE_RSS_4Q; /* Set up random bits */ stoeplitz_to_key(&rss_key, sizeof(rss_key)); /* Now fill our hash function seeds */ for (i = 0; i < 10; i++) IGC_WRITE_REG_ARRAY(hw, IGC_RSSRK(0), i, rss_key[i]); /* * Configure the RSS fields to hash upon. */ mrqc |= (IGC_MRQC_RSS_FIELD_IPV4 | IGC_MRQC_RSS_FIELD_IPV4_TCP); mrqc |= (IGC_MRQC_RSS_FIELD_IPV6 | IGC_MRQC_RSS_FIELD_IPV6_TCP); mrqc |= IGC_MRQC_RSS_FIELD_IPV6_TCP_EX; IGC_WRITE_REG(hw, IGC_MRQC, mrqc); } /* * igc_get_hw_control sets the {CTRL_EXT|FWSM}:DRV_LOAD bit. * For ASF and Pass Through versions of f/w this means * that the driver is loaded. For AMT version type f/w * this means that the network i/f is open. */ void igc_get_hw_control(struct igc_softc *sc) { uint32_t ctrl_ext; ctrl_ext = IGC_READ_REG(&sc->hw, IGC_CTRL_EXT); IGC_WRITE_REG(&sc->hw, IGC_CTRL_EXT, ctrl_ext | IGC_CTRL_EXT_DRV_LOAD); } /* * igc_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. * For ASF and Pass Through versions of f/w this means that * the driver is no longer loaded. For AMT versions of the * f/w this means that the network i/f is closed. */ void igc_release_hw_control(struct igc_softc *sc) { uint32_t ctrl_ext; ctrl_ext = IGC_READ_REG(&sc->hw, IGC_CTRL_EXT); IGC_WRITE_REG(&sc->hw, IGC_CTRL_EXT, ctrl_ext & ~IGC_CTRL_EXT_DRV_LOAD); } int igc_is_valid_ether_addr(uint8_t *addr) { char zero_addr[6] = { 0, 0, 0, 0, 0, 0 }; if ((addr[0] & 1) || (!bcmp(addr, zero_addr, ETHER_ADDR_LEN))) { return 0; } return 1; }